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Radu Ciprian Bilcu

Research Engineer
Video/Image DSP
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Background

I have obtained the BSc and MSc degrees in Electronics from Technical University of Cluj-Napoca Romania in 1995 and 1996 respectively. From 1999 to 2004 I have been a researcher at Tampere University of Technology where I have obtained the DrTech degree in 2004. I joined Nokia Research Center in March 2004. Located at the Nokia Tampere (Finland) facility, I am conducting research in the field of image processing.


Research interests:

  1. Image processing:
    1. Image restoration: de-noising, sharpening, de-blurring;
    2. Color image processing: color and intensity correction, contrast enhancement, high dynamic range;
    3. Image quality assesment;
  2. Adaptive systems and algorithms:
    1. Time domain LMS adaptive algorithms;
    2. Transform domain LMS adaptive algorithms;
    3. Non-linear and order statistics adaptive filters;
    4. Application of adaptive filters to: image, audio and speech processing, communications, echo cancelation, active noise control;
  3. Neural networks and applications

Patents:

1 granted patent and 4 patent applications.


Publications:

Thesis:

  1. Radu Ciprian Bilcu - On Adaptive Least Mean Square FIR Filters: New Implementations and Applications - DrTech (Doctor of Technology) Thesis, Tampere University of Technology, Institute of Signal Processing, 23 June 2004;

In journals:

  1. Radu Ciprian Bilcu, Pauli Kuosmanen, Karen Egiazarian - On Length Adaptation for the Least Mean Square Adaptive Filters, in Elsevier Signal Processing journal, Vol. 86, Issue 10, October 2006, pp: 3089-3094.
  2. Radu Ciprian Bilcu, Markku Vehvilainen - Modified Non-Local Averaging for Image De-Noising, in WSEAS Transactions on Circuits and Systems, Issue 7, Vol. 5, July, 2006, pp: 946-952.
  3. Radu Ciprian Bilcu, Markku Vehvilainen - A new Image De-noising Technique Based on Image Decomposition and Sigma Filtering, in WSEAS Transactions on Communications, Vol. 4, Issue 8, August, 2005, pp: 579-586.
  4. Radu Ciprian Bilcu, Mejdi Trimeche, Sakari Alenius, Markku Vehvilainen - Regularized Iterative Image Restoration in the Blur Space, in WSEAS Transactions on Communications, Vol. 4, Issue 7, July, 2005, pp: 407-416.
  5. Karen Egiazarian, Pauli Kuosmanen, Radu Ciprian Bilcu - Variable Ste-size LMS Adaptive Filters for CDMA Multiuser Detection - in Facta Universitatis (Nis), Series: Electronics Engineering, Vol. 17, April 2004, pp: 21-32.
  6. Radu Ciprian Bilcu, Pauli Kuosmanen , Karen Egiazarian - Channel Equalization Using a new Transform Domain LMS Algorithm with Adaptive Step-size, in WSEAS Transactions on Circuits, Vol. 1, Issue 1, 2002, pp:113-118.
  7. Radu Ciprian Bilcu, Pauli Kuosmanen, Karen Egiazarian - A Transform Domain LMS Adaptive Filter with Variable Step-size, in IEEE Signal Processing Letters, Vol. 9, No. 2, pp:51-53.

In conferences:

  1. Radu Ciprian Bilcu, Markku Vehvilainen - Landweber image restoration with adaptive step-size, in Proceedings of the 9th IEEE, EURASIP International Symposium on Signal Processing and its Applications ISSPA2007, Sharjah, February 12-15, 2007.
  2. Radu Ciprian Bilcu, Markku Vehvilainen - A practical approach for image quality assesment, in Proceedings of the 9th IEEE, EURASIP International Symposium on Signal Processing and its Applications ISSPA2007, Sharjah, February 12-15, 2007.
  3. Radu Ciprian Bilcu, Markku Vehvilainen - Fast nonlocal means for image de-noising, in Proceedings of IS\&T/SPIE Symposium on Electronic Imaging, Digital Photography III Conference, San Jose, California USA, 28 January - 1 February 2007.
  4. Radu Ciprian Bilcu, Adrian Burian, Markku Vehvilainen - Iterative Image Restoration for Data Forms Detection, in Proceedings of the 13th International Conference on Systems, Signals and Image Processing, Budapest, Hungary, September 21-23, 2006.
  5. Radu Ciprian Bilcu, Markku Vehvilainen - Image De-noising Using a Fast Non-local Averaging Algorithm, in Proceedings of 10th WSEAS Circuits, Systems, Communications and Computers WSEAS/CSCC multiconference, Vouliagmeni, Athens, Greece, July 11-16, 2006.
  6. Radu Ciprian Bilcu, Markku Vehvilainen - Nonlinear Non-Local Averaging for Image De-noising, in Proceedings of the Nordic Signal Processing Workshop NORSIG2006, Reikjavik, Iceland, June 7-9, 2006.
  7. Alessandro Foi, Radu Ciprian Bilcu, Vladimir Katkovnik, Karen Egiazarian - Adaptive-Size Block Transforms for Signal-Dependent Noise Removal, in Proceedings of the Nordic Signal Processing Workshop NORSIG2006, Reikjavik, Iceland, June 7-9, 2006.
  8. Radu Ciprian Bilcu, Adrian Burian, Markku Vehvilainen - Image Pre-processing for Bar Code Detection in Mobile Devices, in Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing ICASSP2006, Toulouse, France, May 14-19, 2006.
  9. Alessandro Foi, Radu Ciprian Bilcu, Vladimir Katkovnik, Karen Egiazarian - Anisotropic Local Approximations for Pointwise Adaptive Signal-Dependent Noise Removal , in Proceedings of the 13th European Signal Processing Conference EUSIPCO2005, Antalya, Turkey, September 4-8, 2005.
  10. Radu Ciprian Bilcu, Markku Vehvilainen - A Modified Sigma Filter for Noise Reduction in Images, in Proceedings of the 9th WSEAS Circuits, Systems, Communications and Computers multiconference, WSEAS/CSCC2005, Vouliagmeni, Athens, Greece, July 11-16, 2005.
  11. Radu Ciprian Bilcu, Mejdi trimeche, Sakari Alenius, Markku Vehvilainen - Blur Space Iterative De-blurring, in Proceedings of the 9th WSEAS Circuits, Systems, Communications and Computers multiconference, WSEAS/CSCC2005, Vouliagmeni, Athens, Greece, July 11-16, 2005.
  12. Radu Ciprian Bilcu, Markku Vehvilainen - A New Method for Noise Estimation in Images, in Proceedings of the IEEE EURASIP International Workshop on Nonlinear Signal and Image Processing, NSIP2005, Sapporo, Japan, May 18-20, 2005.
  13. Radu Ciprian Bilcu, Pauli Kuosmanen, Karen Egiazarian - On Adaptive Interpolated FIR Filters, in Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP2004, Montreal, Quebec, Canada, May 17-21, 2004.
  14. Karen Egiazarian, Pauli Kuosmanen, Radu Ciprian Bilcu - Variable Step-size LMS Adaptive Filters for CDMA Multiuser detection, in Proceedings of the 6th IEEE International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Servis´ces, TELSIKS 2003, Serbia and Montenegro, October 1-3, 2003.
  15. Radu Ciprian Bilcu, Pauli Kuosmanen, Karen Egiazarian - LMS Adaptive Filter with Optimum Step-Size for Tracking Time-Varying Channels, in Proceedings of the 3rd IEEE International Symposium on Image and Signal Processing and Analysis, ISPA 2003, Rome, Italy, September 18-20, 2003.
  16. Radu Ciprian Bilcu, Karen Egiazarian, Pauli Kuosmanen, Corneliu Rusu - Comparative Study Between Scrambling and Transform Domain Adaptive Filtering Techniques - in Proceedings of the 3rd International TICSP Workshop on Spectral methods and Multirate Signal Processing, SMMSP2003, Barcelona, Spain, September 13-14, 2003.
  17. Radu Ciprian Bilcu, Karen Egiazarian, Pauli Kuosmanen, Corneliu Rusu - An Adaptive Variable Length DCT Transform for Signal Denoising, in Proceedings of the 16th European Conference on Circuits Theory and Design, ECCTD 2003, Krakow, Poland, September 1-4, 2003.
  18. Radu Ciprian Bilcu, Pauli Kuosmanen, Karen ERgiazarian - Tracking Time-Varying Channels with Adaptive Step-Size Transform Domain LMS Algorithm, in Proceedings of the 7th WSEAS Circuits, Systems, Communications and Computers multiconference WSEAS/CSCC 2003, Corfu, Greece, July 7-10, 2003.
  19. Radu Ciprian Bilcu, Pauli Kuosmanen, karen Egiazarian - Adaptive Channel Equalization in Non-Gaussian Noise Environments, in Proceedings of the 5th IEEE International Conference and Exhibition on Digital Signal Processing and its Applications, DSPA 2003, Moskow, Russia, March 12-14, 2003.
  20. Radu Ciprian Bilcu, Pauli Kuosmanen, Karen Egiazarian - Noise Constrained LMS Algorithm in Transform Domain, in Proceedings of the 11th European Signal Processing Conference, EUSIPCO 2002, Toulouse, France, September 3-6, 2002.
  21. Radu Ciprian Bilcu, Pauli Kuosmanen, Karen Egiazarian - A New Variable Length LMS Algorithm: Theoretical Analysis and Implementations, in Proceedings of the 9th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2002, Dubrovnik, Croatia, September 15-18, 2002.
  22. Radu Ciprian Bilcu, Pauli Kuosmanen, Karen Egiazarian - On Order Statistic Least Mean Square Algorithms, in Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2002, Orlando, Florida, USA, May 13-17, 2002.
  23. Radu Ciprian Bilcu, Pauli Kuosmanen, Karen Egiazarian - Time Domain and Transform Domain LMS Adaptive Filters with Variable Step-Size: An Overview, in Proceedings of International TICSP Workshop on Spectral Methods and Multirate Signal Processing, SMMSP 2002, Toulouse, France, September 7-8, 2002.
  24. Eniko Beatrice Bilcu, Jukka Saarinen, Radu Ciprian Bilcu, Pauli Kuosmanen - An Improved Variable Step LMS Algorithm, in Proceedings of  WSEAS International Conference on Speech, Signal and Image Processing WSEAS/SSIP01, Malta, September 1-6, 2001.
  25. Radu Ciprian Bilcu, Pauli Kuosmanen, Karen Egiazarian - A new Variable Step LMS Algorithm for Transform Domain, in Proceedings of the 8th International  Conference on Electronics, Circuits and Systems, ICECS2001, Malta, September 2-5, 2001.
  26. Radu Ciprian Bilcu, Pauli Kuosmanen, Karen Egiazarian - Length Adaptation for Transform Domain LMS Algorithm using Filter banks, in Proceedings of International TICSP Workshop on Spectral Methods and Multirate Signal Processing, SMMSP 2001, Pula, Croatia, June 16-18, 2001.
  27. Corneliu Rusu, Radu Ciprian Bilcu, Pauli Kuosmanen - Window Length for Median Quadratic Algorithms, in Proceedings of the IEEE-EURASIP Workshop on Nonlinear Signal Processing, NSIP 2001, Baltimore, Maryland, USA, June 3-6, 2001.
  28. Radu Ciprian Bilcu, Pauli Kuosmanen, Corneliu Rusu - A Novel Complementary Pair Variable Step LMS Algorithm, in Proceedings of Nordic Signal Processing Symposium, NORSIG 2000, Kolmarden, Sweden, June 13-15, 2000.
  29. Radu Ciprian Bilcu, Pauli Kuosmanen, Corneliu Rusu - Improving Performances of Complementary Pair LMS Algorithm, in Proceedings of X European Signal Processing Conference, EUSIPCO2000, Tampere, Finland, September 3-5, 2000.
  30. Radu Ciprian Bilcu, Pauli Kuosmanen, Corneliu Rusu - A Noise Constrained VS-LMS Algorithm, in Conference record of IEEE/AFCEA Information Systems for Enhanced Public Safety and Security, EUROCOMM2000.
  31. Radu Ciprian Bilcu - A Complementary LMS and LMF Algorithm, in Proceedings of the 5th International Workshop on Bases of Electronics, SBE'99, Cluj-Napoca, Romania, June 10-11, 1999.
  32. Radu Ciprian Bilcu, Corneliu Rusu - Matrix System pf Processing and Displaying of the Acoustic Signal, in Proceedings of International Symposium on Communications, COMMUNICATIONS'96, Bucharest, Romania, November 27-29, 1996.
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